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5.4. SUMMARY The lost ACL packets are predominately caused by CRC errors at the relay node. This indicates that there might be room for improvement in the GFSK demodulation designed for the relay node, cf. Section 3.2.4. However it is the expected first point of failure, as the ACL payload is the part most prone to errors. Thus a point for further investigation where this platform would be well suited, is the application of sophisticated FEC schemes on top of Bluetooth ACL packets. 69